Question

6. For the reaction A B : a) What does it mean if a plot of 1/[A] vs t is linear? (t=time) -34 b) What does it mean if a plot of In[A] vs. t is linear? 7. If the temperature changes, which of the following will change and whi constant? For each, check the appropriate box. Will change Will not change a) the reaction rate b) the rate constant, k c) the equilibrium constant, K d) the activation energy, Ea

Answer 1

*) ARRIHENIUS EQUATION, ka A talRT k is RATE CONSTANT 6. a) eu (A] ust is LINEAR READON IS FIRST ORDER W.Rif A. RATE = k [A] FOR A IST ORDER Rx n. lu [A] = lu (A) - kt A plot of lu [A] ust is LINEAR 11)is Initiae CONCENTRATION, K is RME CONSTANT - b I ust is LINEAR balo Rot B REACTION is SECOND OROCR - RATE = k (A] ² FOR A 2nd ORDER RxN. À IS PRE - EXPONENTAL (FAEPUENCY) Fueror Ea is ALTUATION ENERty R is GAS CONSTANT AND T IS TEMPERATURE IN KELVIN. ACCORDING TO KINETIC GAS THEORY, AS TEMPERATURE INCREASES CouISIONS BETWEEN Remeras molewIES INCREASES WHICH IS GIVEN By FREQUENCY FALFOR A. So RATE CONSTANT will CHANGE WITH CHANGE IN TEMPERATURE a) REACTION RATE : WILL CHANGE 6) RATE CONSTANT, K: WILL CHANGE c) FQUILIBRIUM constant k: biu CHANGE (de k = -Alta VAN'T Hoff EQN. : WILL NOT d) Acnu thon ENERGY, Ea Altu thone ENERGY IS ENERGY DIFFERENCE BlW REATTANTS AND TRANSITION STATE (TS) AS SHOWN IN THE FIGURE ON THE LEFT. so I h ust is STRAIGHT LINE RT ENERGY ReruRAN PRODUCr REMON COORDINATE